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Operating Systems Solaris One StorageTek 6140 vs Two (2) 2540 's? Post 302196754 by buddhavelvet on Monday 19th of May 2008 11:07:17 AM
Old 05-19-2008
One StorageTek 6140 vs Two (2) 2540 's?

We're moving our production 3510FC to development, so we need to replace the production 3510FC. The 6140 is nice, but pricey.

Here's the question: Would two 2540's (RAID 10) be 'faster' than one 3510? (RAID 10) and faster than one 6140 (RAID 10)?

One StoregeTek 6140 (16x72GB 15k rpm fc-al RAID 10) vs. Two StoregeTek 2540 's (24x72GB 15k rpm SAS RAID 10)

While the 2540 uses SAS drives vs the 6140 FC-AL drives, the specs on the drives are nearly identical as far as average latency etc as listed on seagate.com (SAS = ST373455SS ) (FC-AL = ST373455FC )

Oh yeah, we're an Oracle shop, so my assumption is that, with drives & HBA being equal, the more spindles the better.
 

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lsimega(7D)															       lsimega(7D)

NAME
lsimega - SCSI HBA driver for LSI MegaRAID 320-2x SCSI RAID Controller The lsimega SCSI RAID host bus adapter driver is a SCSA-compliant nexus driver that supports LSI MegaRAID 320-2x SCSI RAID devices. The lsimega driver supports standard functions provided by the SCSA interface, including RAID disk I/O and passthrough I/O to support SCSI tape and CDROM. DRIVER CONFIGURATION
The lsimega.conf file contains no user configurable parameters. Please configure your hardware through BIOS. The LSI MegaRAID 320-2x device can support up to 40 logic drivers. Note that BIOS numbers the logic drives as 1 through 40, however in Solaris these drives are numbered from 0 to 39. See attributes(5) for a description of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability | | +-----------------------------+-----------------------------+ FILES
/kernel/drv/lsimega 32-bit ELF kernel module. /kernel/drv/amd64/lsimega 64-bit kernel module ( only). /kernel/drv/lsimega.conf Driver configuration file (contains no user-configurable options). prtconf(1M), attributes(5), amr(7D), scsi_hba_attach(9F), scsi_sync_pkt(9F), scsi_transport(9F), scsi_inquiry(9S), scsi_device(9S), scsi_pkt(9S) Small Computer System Interface-2 (SCSI-2) 20 April 2005 lsimega(7D)
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